In the comments on the side of the article, Unity fellow Ed in the Apple writes the following:

Marty Scheinman has been an arbitrator for 40 years - and resolved
scores of dense, complex disputes - fact-finding decisions usually trace
out a path to a contract - while the teachers union is arguing for the
full 4% pattern there are a range of Bloomberg-Klein policies that are
anathema to teachers. The settlement could be a win-win

I suspect that comment is more than just an aside - it's the blueprint for where the UFT is going with this.